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Comparison of two different sites of measurement for transabdominal uterine artery Doppler velocimetry at 11-13 weeks.
Lefebvre J, Demers S, Bujold E, Nicolaides KH, Girard M, Brassard N, Audibert F.
Ultrasound Obstet Gynecol 2012;40:288-92. -
First-trimester maternal serum matrix metalloproteinase-9 (MMP-9) and adverse pregnancy outcome.
Poon LC, Nekrasova E, Anastassopoulos P, Livanos P, Nicolaides KH.
Prenat Diagn 2009;29:553-9.